0
Starfish
Also known as sea stars, these echinoderms are 2,000 species strong and found in seas and oceans all over the world. They can vary in size from less than half an inch to more than four feet across.
1,388 Questions
How do starfish relate to other sea animals?
well if you had said what are star fish relitives i would had said sea urchens and brittle stars so all i have to say to this answer is that there are diffrent kinds of star fish. they only relate to sea urchens brittle stars and they sea star family. when i say sea se family i mean like some stars have 10 points while others have 5 or 4. I hope this was helpfull if not i understand
Starfish can either spawn together with eggs and sperm or they can reproduce by themselves. A new starfish can form from a separated part which is considered reproduction. They don't exactly have mating behaviors though.
Why do starfish live in groups?
well starfish like to be in a group so they are not on there own when somethink is trying to eat them..?
They make up the skeleton and protect internal structures.
Starfish eat clams, mussels, oysters, and other shelled creatures. Sometimes they eat hermit crabs and very rarely tiny ocean bugs or parasites.
Some species take advantage of the great endurance of their water vascular systems to force open the shells of bivalve mollusks such as clams and mussels, and inject their stomachs into the shells. Once the stomach is inserted inside the shell it digests the mollusk in place. The cardiac stomach is then brought back inside the body, and the partially digested food is moved to the pyloric stomach. Because of this ability to digest food outside of its body, the sea star is able to hunt prey that are much larger than its mouth would otherwise allow including arthropods, and even small fish in addition to mollusks.
Some starfish have been shown to live for several weeks without food under artificial conditions it is believed that they may receive some nutrients from organic material dissolved in seawater.
starfishes eat any animal that is slow so it can not attack
starfish eat corals, kelp,clam, and oyster
Starfish eat mussels, clams, oysters, snails, sponges, sea anemones, coral or other sea stars.
I live by the ocean in BC/while walking my dog we found a star fish in a pool
Just waiting to get caught by an eagle or seagull ( it is a nice size about 10-12"
across and purple in colour) yes! I rescued it I am only two minutes from beach..
It is now resting in a large pool of seawater in my backyard, I would like my grand children to see it when they come out for Easter dinner on Sunday ( I am going to go back and get it some clams when the tide goes out a bit more) and then on Sunday they can take it back to its rightful home and let it go, when the tide is in..
It is such a pretty colour a deep purple, At first my dog thought it was a new play toy !!NoT !!....
I know nothing about these sea creatures,,,So any in put would be good!!
Thanks
the starfish eats clams usually and other small creatures
Starfish are carnivores (they eat meat)
Like clams, oysters, and fish
Sometimes starfish eat other starfish.
What do starfish need for survival?
I'm not a starfish expert or anything. I know that they eat clams. the center of the Seastar is its mouth. They're kinda like octopuses i guess. I'm not sure if that answers you question though.
How does having radial symmetry help a starfish survive?
It doesn't, really. Starfish are remarkable animals for their strange characteristics, but radial symmetry doesn't have significant benefit to the survival of the animal.
What is sticky on a starfish and sea urchins?
They release a gluey substance from their mouths, almost like saliva.
What is the family of a starfish?
It depends what kind of starfish you are talking about there are many diffrent species.
But the common star fish (Asterias rubens) Is as follows.
Kingdom - Animalia
Phylum - Echinodermata
Class - Asteroidea
Order - Forcipulatida
Genus - Asterias
Species - rubens
How is polution affecting starfish?
Pollution effects all sea life in one way or other. For starfish, marine biologists have learned that their breathing pores often become clogged.
Classification for a starfish?
Starfish have got absolutely nothing to do with fish. Their name originates from antiquity, when everything living in water was called a fish, whatever it looked like. In those days, little was known about classes of life, and that is why many totally unrelated creatures are called fish, such as jellyfish (cnidarians) starfish, and even headless chicken fish, a popular name given to a deep water sea cucumber (coincidentally one of the sea star's closest relatives).
Starfish are now officially known as sea stars.
They are echinoderms. Echinoderms are a totally unrelated to fish. They are a huge group. Their members include sea stars, sea cucumbers, brittlestars, sea urchins and crinoids. The group is actually a phylum of its own, on the same rank as chordata, which are basically vertebrates and a few other creatures. In other words, the echinoderm group is the same rank as the group containing all mammals, reptiles, amphibians, birds, fish and many others.
Echinoderms are the only group of animals which have radial symetry, in other words, more than a single symmetry. Common sea stars have fivefold symmetry, meaning five different divisions, but some other echinoderms can have fewer or many more symetries. Characteristic of many echinoderms are their tube feet. They come in their hundreds, and each moves indepentantly, carrying the echinoderm along. In starfish, these tube feet are present on the underside beneath the arms. In urchins, they are below the rounded body, pretty much the only place with an absence of spines. In sea cucumbers, they are on the underside of the body. Brittlestars and basket stars do not have tube feet. Instead they use their arms for locomotion. They are also the only echinoderms capable of free swimming. Crinoids are have no tube feet, and most are either carried by currenty or are attached to the rock. These have been known ot move, however.
Echinoderms are one of the few phyla which have no representatives living on land or in fresh water. They rely on the seawater for everything, even using it as their blood.
Sea stars have their own class within the echinoderms: Asteroidea.
Here is the classification of the most well known of starfish, the common sea star.
Kingdom:
Animalia (All animals)Phylum:Echinodermata (Echinoderms)Class:Asteroidea (All starfish)Order:ForcipulatidaFamily:AsteriidaeGenus:AsteriasSpecies:Asterias rubens
How has the starfish adapted to its environment?
Beacuase the cushion starfish has 1000's of little suckers underneath, they stick to the rocks and they are so strong that the waves can't pull them off the rocks, but if we come along and rip it off the rocks, that damaged the cushion starfish.
What is the kingdom of starfish?
The sea star is often percieved as a starfish, but is is not a fish at all. It is part of a group called echinoderms. This group also includes sea cucumbers and sea urchins. They all have tube feet, they're invertabraes, they have a skeleton under their skin and they have no head.
Starfish, not truly a fish despite its name, does not, in fact, have two stomachs. From astounding new discoveries, we have found that this is not true; they have three. If you take a look at the Internet, it says that starfish have two stomachs. I am part of a team of science researchers trying to help make the Internet as fact-based as possible, when needed. Thank you for your time; on behalf of the team, I hope this helped.
-ScienceUnited Team
Why do starfish have 2 stomachs?
They have two stomachs because the cardiac is the one who uses its stomach to extend, so it can grab their prey, and the pyloric is the one who digest the food which it passes through the stomach, to the suckers and digest it on the outside with the suckers.
They prey on mussels, clams, oysters, crustaceans, worms, echinoderms, starfish, and sea urchins. death
What does the starfish do with its stomach when its feeding on clams or oysters?
Sea stars have a unique method of eating. The animal will actually evert its stomach outside of its body and insert it into the shell of the mollusk, for example, it is prying open. The stomach will then engulf and begin to digest the prey before it is pulled back into the inside of the sea star.
Why can a starfish move equally in any direction?
because a sea star has 5 legs
A starfish has legs that are placed horizontally around its body, so it can maneuver in any direction. Some studies indicate that some starfish may favor some of their legs and move in a particular direction most of the time, but these studies are inconclusive.
The starfish doesn't creep around the ocean floor with its arms! They actually use tiny tube feet to move around. If you turn a live starfish over you will see its tiny tube feet wiggling back at you.
How do starfish help the environment?
Starfish help the environment in numerous ways. Namely, they keep the population of sea mollusks in check, and they keep their habitat free of barnacles and algae.
Starfish are not mollusks. Starfish are classified as echinoderms, which is a phylum of marine animals that are known for their symmetry as adults. Other animals in this phylum are sand dollars and sea urchins. Sea-stars, or starfish, belong to the class Asteroidea. Like mollusks, however, starfish can be found in the intertidal zone of the ocean, where mollusks are commonly found.
